Adjustable spool for music-sheets.



A. DE KLEIST. ADJUSTABLE SPOOL FOR MUSIC SHEETS.

I APPLIOATION FILED MAR.18, 1911. 1,091,144, Patented Mar. 24,191

line 33, Fig. 2.

UNITED STATES PATENT o FroE-f AUGUST DE KLEIST, OF NORTH TONA'WANDA, N YORK, ASSIGNOR TO THE. RUDOLPH WURLITZER MANUFACTURING COMPANY, OF NORTH TONAWANDA, NEW YORK, A

CORPORATION OF NEW YORK.

ADJUSTABLE SPOOL FOR MUSIC-SHEETS.

Specification of Letters Patent.

Patented Mar. 24, 1914.

Application filed March 18, 1911. Serial No. 615,233.

7 '0 all whom it may concern:

Be it known that I, AUGUST DE KLEIST, a citizen of the United States, residing at North Tonawanda, in the county of Niagara and State of New York, have invented a new and useful Improvement in Adjust-able Spools for Music-Sheets, of which the following is a specification.

This invention relates to the music and take-up rolls or spools of automatic musical instruments, and more particularly to spools of this kind in which the distance between their end flanges can be regulated to compensate for variations in the width of the music sheet due to atmospheric influences or other causes.

In spools of the class in which one or both flanges are adjustably mounted on the ends of the spool-body, they are liable to wabble or move out of parallelism in case the hearing faces oftheir adjusting nuts or clamping devices are not perfectly square. When this occurs, the music sheet is allowed to shift sidewise on the spool, and as a result, becomes buckled or wrinkled at its edges, causing its perforations to register imperfectly with the tracker ducts and rendering the music in a faulty manner.

The object of my invention is the provision of a music spool in which the flanges are always reliably held parallel with each other so as to accurately guide the music sheet and insure proper tracking thereof, regardless of imperfect-ions of the adjusting devices. i

In the accompanying drawings: Figure 1 is a side elevation of a music spool embodying the invention. Fig. 2 is a longitudinal section thereof. Fig. 3 is a cross sect-ion on Similar letters of reference indicate corre sponding parts throughout the several views.

The body of the spool is preferably of wood but may be constructed of any other suitable material. Instead of being continuous from end to end, it is divided, preferably near one end, into two sections A, A each of which carries at its outer 'end'bne of thecustomary flanges B. These flanges are rigidly secured to the ends of the respective sections by nails b or other suitable fastenings whereby they are at all times reliably held at right angles to the axis of the spool and hence parallel with each other. In the construction shown in the drawings, they are stamped of sheet metal and provided with outwardly-turned marginal rims I), but they may be constructed of wood or other appropriate material.

The long spool section A is provided at its ends with axial studs or spindles C, C which are squared at their inner ends or otherwise constructed to compel the same and said section to turn together. One of these studs, say the right-hand one C, is provided with the usual clutch wings 0 adapted to interlock with the clutch member of the customary driving mechanism, not shown. The other spindle C is of the requisite length to extend through and beyond the other spool sect-ion A which is preferably provided with a metallic bushing d. The section A is held upon the stud C by an adjusting nut E preferably formed with a cap or inwardly-extending annular flange e which bears against the outer side of the adjacent spool-flange B, this nut engaging the screw threaded outer portion of said stud, as. shown in Fig. 2. The two spool sections are compelled to turn together by a longitudinal coupling pin f secured to one section and extending into a corresponding socket g in the other.

72. indicates springs interposed between the two spool-sections and tending constantly to separate the same so as toincrease the distance between the flanges. In the preferred construction shown in the drawings, three equidistant spiral springs ,are employed which are seated in longitudinal sockets 71 in the long spool section A and bear at their outer ends against the adjacent end of the short spool section A. I

As shown in Fig. 2, the opening of the 4 left-hand spool-flange, as well as the bore of the bushing (l, is smooth, to permit this flange and its spool section A to slide freely on the stud C The latter formsa long bearing for said section, which reliably maintains it in axial alinement with the other section A In adjusting the spool, upon screwing the nut E forward the short spool-section A together with its flange B is shifted toward the opposite flange, thus compressing the springs 72. more or less and [shortening the spool accordingly; while upon turmng the nut backward the springs press the spoolseotion A farther away from the section A I and cause the section A and its flange to follow the nut, thus lengthening the spool in an obvious manner.

1 'By this improved construction the spoolflanges, being rigidly secured to the spoolsections, always maintain their parallelism and yet-in no way interfere with the adjustment of the spool to compensate for variations in the width of the music sheet, thus preventing the objectionable buckling o1 wrinkling of the edges of the sheet hereinbefore mentioned and insuring accurate tracking of the same. At the same time, the adjusting device can be conveniently, manipulated, while its comparative simplicity enables the spool to be produced at small cost.

I claim as my invention:

1. A spool for a music sheet, comprising a pair of sections one of which is slidable toward and from the other, each of said sections carrying a flange, means for holding said 'slidable spool-section against rotation relatively to the other section, yielding means tending to separate said sections, and adjusting means for shifting said slidable section toward the opposing section.

2. A spool for a music sheet comprising a pair of sections each carrying a flange,

yielding means tending to separate such sectlons to increase the distance between the, spool-flanges, and means arranged on the outer side of one of said flanges ifor adjusting the spool sections toward each other.

3. A spool for a music sheet comprising a.

pair of sections each carrying a flange, a

spring interposed between the sections and tending to separate them, one of said sections having at its inner end a screw threaded spindle upon which the other section is slidably mounted, and an adjusting. nut applied to said spindle on the outer side of the flange carried by said slidable spool-section. 1

at. A spool for a music sheet comprising apair of sect-ions movable toward and from each other and each'carrying a flange, the inner faces of said flanges being parallel one of said sections being provided at opposite ends with studs one of-iwhich passes axially through the other spool-section, an adjusting device applied to the last-named stud and bearing against the outer side of the adjacent spool-flange, and a spring interposed between the spool-sections and tending to separate the same.

A spool for a music sheet comprising sections movable toward and from each other, flanges rigidly secured to the outer ends of said sections, a coupling pin carried by one of the sections and slidable lengthwise in the other, one of said sections having a screw threaded spindle passing axially through the other section, an adjusting nut applied to said spindle on the outer side of the adjacent flange, and a spring seated in the inner end of one of said sections and bearing against the other section.

Witness my hand this 16th day of March,

' AUGUST DE KLEIST. Witnesses:

C. F. GEYER,

\E. M. GRAHAM. 

